diff --git a/container/gtree/gtree_z_example_avltree_test.go b/container/gtree/gtree_z_example_avltree_test.go
new file mode 100644
index 000000000..7f1a414ff
--- /dev/null
+++ b/container/gtree/gtree_z_example_avltree_test.go
@@ -0,0 +1 @@
+package gtree
diff --git a/container/gtree/gtree_z_example_btree_test.go b/container/gtree/gtree_z_example_btree_test.go
new file mode 100644
index 000000000..f96f52a07
--- /dev/null
+++ b/container/gtree/gtree_z_example_btree_test.go
@@ -0,0 +1,7 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with gm file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package gtree_test
diff --git a/container/gtree/gtree_z_example_redblacktree_test.go b/container/gtree/gtree_z_example_redblacktree_test.go
new file mode 100644
index 000000000..7f1a414ff
--- /dev/null
+++ b/container/gtree/gtree_z_example_redblacktree_test.go
@@ -0,0 +1 @@
+package gtree